package com.kkw.shoppingmall.cart.controller;

import com.kkw.shoppingmall.cart.service.CartService;
import com.kkw.shoppingmall.cart.vo.Cart;
import com.kkw.shoppingmall.cart.vo.CartItem;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.List;
import java.util.concurrent.ExecutionException;

/**
 * @author Kevin
 * @date 2021-06-11
 **/
@Controller
public class CartController {

    @Autowired
    private CartService cartService;

    @GetMapping("/currentUserItems")
    @ResponseBody
    List<CartItem> currentUserItems(){
        return cartService.getUserCartItems();
    }


    /**
     * 像京东
     * 浏览器有一个cookie, user-key：标识用户身份，一个月后过期
     * 如果第一次使用jd购物车功能，都会给一个临时的用户
     * 浏览器以后保存，每次访问都会带上这个cookie;
     *
     * 登录：则有session 则按照session做
     * 没登录，则会给一个cookie,按照里面设置好的user-key来做
     *
     * 如果没有一个临时用户，帮忙创建一个临时用户
     * @param
     * @return
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {
//        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
//        if (attribute == null) {
//            //没登录获取临时购物车数据
//        }else {
//            //获取登录了的购物车
//        }
//        UserInfoTo userInfoTo = CartInterceptor.threadLocal.get();
        Cart cart= cartService.getCart();
        model.addAttribute("cart",cart);
        return "cartList";
    }


    /**
     * 添加商品到购物车
     * @return
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId,
                            @RequestParam("num") Integer num,
                            RedirectAttributes ra) throws ExecutionException, InterruptedException {
        cartService.addToCart(skuId,num);
        //不直接返回了 ，让他去查一次
//        model.addAttribute("item",cartItem);
        ra.addAttribute("skuId",skuId);
        return "redirect:http://cart.shoppingmall.com/addToCartSuccess.html";
    }

    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,Model model){
        //重定向到成功页面，再次查询购物车数据即可
        CartItem item=cartService.getCartItem(skuId);
        model.addAttribute("item",item);
        return "success";
    }


    /**
     * 给远程shoppingmall-order调用
     */
//    @ResponseBody
//    @GetMapping("/currentUserItems")
//    public List<CartItem> currentUserItems() {
//        List<CartItem> items = cartService.getUserCartItems();
//        return items;
//    }

    /**
     * 删除购物车里的某一项
     */
    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId) {

        cartService.deleteItem(skuId);
        return "redirect:http://cart.shoppingmall.com/cart.html";
    }

    /**
     * 修改购物项目的数量
     */
    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId") Long skuId, @RequestParam("num") Integer num) {

        cartService.changeItemCount(skuId, num);
        return "redirect:http://cart.shoppingmall.com/cart.html";
    }

    /**
     * 勾选购物项目
     */
    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId, @RequestParam("check") Integer check) {

        cartService.checkItem(skuId, check);
        return "redirect:http://cart.shoppingmall.com/cart.html";
    }
}
